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Unread 07-29-14, 09:03 AM   #1
sakurakira
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blp quality loss

I've looked at the various threads in this subforum and none of them really addressed my specific issue. My main goal is using blp as texture replacements (in the Interface folder), not in an addon, so I do need to use the blp format and can't use tga.

My main problem is a loss in quality when I convert png into blp. See attachment. My main method of conversion is BLP2PNG, but I've also tried using this Photoshop Plug-in, and also saving as a 32-bit tga and converting it to blp. All of these methods produce the same amount of quality loss, even when the source is 32-bit.

Is this just a problem native the the blp format, or is there some other conversion method I can use?
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Unread 07-29-14, 11:10 AM   #2
Gethe
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I've been using Blpc for conversion. It allows you to choose the compression method (e.g. Raw) in order to get the best results.
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Unread 07-29-14, 11:46 AM   #3
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Dito for http://www.wowinterface.com/download...Converter.html.
It provides an option to specify the compression.
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Unread 07-29-14, 01:50 PM   #4
sakurakira
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Thank you both for the responses. I've tried both of those programs out just now.

With Blpc the dxt 1, 3, 5 formats all saved fine and I can view them fine in XnView and Photoshop. Unfortunately raw1 showed nothing at all, and raw3 was corrupted when I tried to open them in XnView or PS (see attachment). I CAN view them within Blpc itself and they do show up in WoW. But I think being unable to view them outside of Blpc is rather odd. Any suggestions?

With BLPNG Converter I had the same issues. The indexed (256 color) and dxt compression saved and viewed fine, but the uncompressed had the same corruption found in the raw3 above.
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Unread 07-29-14, 02:34 PM   #5
Phanx
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Originally Posted by sakurakira View Post
With BLPNG Converter I had the same issues. The indexed (256 color) and dxt compression saved and viewed fine, but the uncompressed had the same corruption found in the raw3 above.
I've noticed that many BLPs produced by BLPNG Converter appear corrupted in the Windows thumbnail preview, but they've all worked fine in WoW, so I'd tend to blame the preview handler, not the converter, for that particular issue.
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